Re: [PATCH v2] dt-bindings: serial: imx: clarify rs485 support usage

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Hi Baruch,

On Thu, Jun 28, 2018 at 4:25 AM, Baruch Siach <baruch@xxxxxxxxxx> wrote:
> The i.MX UART peripheral uses the RST_B signal as input, and CTS_B as
> output. This is just like the DCE role in RS-232. This is true
> regardless of the "DTE mode" setting of this peripheral.
>
> As a result, rs485 support hardware must use the CTS_B signal to control
> the RS-485 transceiver. This is in contrast to generic rs485 kernel
> code, documentation, and DT property names that consistently refer to
> the RTS as transceiver control signal.
>
> Add a note in the DT binding document about that, to reduce the
> confusion somewhat.
>
> Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx>

Yes, this is helpful:

Reviewed-by: Fabio Estevam <fabio.estevam@xxxxxxx>
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